[Fedora-livecd-list] /var/tmp/imgcreate-* : Can't umount

[Bruno Wolff III]

On Sun, Sep 26, 2010 at 18:12:20 +0100,
  James Heather <j.heather at surrey.ac.uk> wrote:
> 
> And sometimes you have to delete the loop device manually:
> 
>     losetup -d /dev/loop0
> 
> (or whatever loop device was used).
> 
> It's boring enough that I've often intended to write a quick script to
> do it (but, of course, I've never got round to it).

That should eventually be able to go away. I am not sure when it changed,
but you don't need to use losetup with at least recent stuff. I haven't
looked into the details, but we should stop using it when it safe to
do so for stuff that we care about.